Update kubectl to version 1.6.0
Update kubectl to version 1.6.0

toxeus/scoop,berwyn/scoop,r15ch13/scoop,lukesampson/scoop,coonce/scoop,yunspace/scoop,vidarkongsli/scoop,kodybrown/scoop,vinaynambiar/lukesampson-,Cyianor/scoop,reelsense/scoop,rasa/scoop,Congee/scoop,nikolasd/scoop,nueko/scoop